XBoot only makes 1 file out of the list.

I've just started using XBoot so this could be my own error here. When I added the .ISO's I wanted to put on my Flash Drive to the list and selected "Create USB", it only puts 1 .ISO from the list on the Flash Drive. It also happens when I create a DVD .ISO. I don't get an error it just won't add them. I think no matter which way I list them, it only adds the newest one on the list.

If you guys need anymore questions answered, please ask and I will update the list above.

Thanks for any help, DWreck.

Update: I just got an idea. In your reply if you could please answer this new question as well. After XBoot creates the boot loader on the USB Drive, could I just manually explore the Flash Drive and add the ISO's my self?